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Finding the Fourth Proportional to 300,805.78, 451,186.11 and 87,575.33

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Solution

The fourth proportional to 300,805.78, 451,186.11 and 87,575.33 is: 131,356.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,805.78 : 451,186.11 = 87,575.33 : x
  2. Step 2: Convert to fraction form
    300,805.78/451,186.11 = 87,575.33/x
  3. Step 3: Cross multiply
    300,805.78x = 451,186.11 × 87,575.33
  4. Step 4: Simplify right side
    300,805.78x = 39,512,772,474.67
  5. Step 5: Solve for x
    x = 39,512,772,474.67/300,805.78
  6. Step 6: Final answer
    x = 131,356.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.